UPVC Extreme Windows Engineered to Last

We are proud to exclusively offer homeowners throughout Gloucestershire & Wiltshire both the eco-friendly and security benefits of UPVC Extreme Windows.Extreme Windows surpass the high standard of thermal efficiency demonstrated by the best A-rated windows, making them one of the most eco-friendly windows available today.

Boasting five unique selling points of Extreme Comfort, Extreme Style, Extreme Peace of Mind, Extreme Warranty and Extreme Security, Extreme windows carry the Secure by Design badge as standard and not only provide excellent protection, but also long-term confidence in your windows.Windows in the Extreme Collection are backed by an extraordinary 20 Year Guarantee, that includes genuine cover over all moving parts, as well as frames. The British-made Extreme Window offers homeowners a range of features which aren’t provided by any other system.

Extreme Security

Secured by Design: Available with enhanced security options designed to meet the requirements of the Police preferred specification.

Up to 9-Point Locking System: Fix your window sash into the frame at multiple points with one action, for impenetrable airtight security.

2 x High Compression Hinge Bolt: Provides 360-degree rigidity to protect against the threat of break-ins.


Peace of Mind

Performs Longer: Manufactured with a series of long-lasting components and latest technology producing a superstructure that provides durable and resilient performance for a lifetime – No twisting or warping.

Protection from the Outside Elements: Twice the standard coverage of regular weather seals, the dual density and high elasticity seal uses compression technology to create an essential defence against wind, rain and damp.

Made in Britain: Manufactured in Yorkshire, we work closely with our supplier to ensure that every order is crafted with an exceptional level of care and attention to detail.

Extreme Style

Sophisticated and Stylish: Available in an extensive range of styles and colours for a personalised appearance to complement the existing features of your home.

Looks Brand New for Years to Come: Highly engineered frames stop dirt ingraining within the profile to keep your windows looking newer for longer.



Extreme Comfort

Reduced Loss of Heat: Thermally reinforced means your home will be cosy whatever the weather and you’ll save money on the cost heating bills.

A+ Rating: Above recommended energy efficiency performance according to The British Fenestration Ratings Council (BFRC).

Energy Saving Trust: Listed by the Energy Saving Trust as a product that is energy efficient, in support of environmentally friendly goods and reduced fuel bills.

Enhanced Noise Reduction: Chambered frames and airtight compression seals that block out noise from the outside world.

Temperature Regulation: A combination of low iron and specialist coated glass reduce cold zones and condensation, whilst using expertise in solar warming to regulate temperature throughout all seasons.

Our Service

  • Indoor showrooms
  • Quick, no obligation quotes
  • Zero-pressure friendly sales people
  • Top quality products
  • Energy efficiency
  • High level security
  • Glass & Glazing Federation (GGF) Members
  • Covering Glos & The Cotswolds

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See some of our work

Take a look at what some of our happy customers have had done recently. Here's a few of our upvc windows projects

Woodgrain Casement Windows

The building needed woodgrain casement windows with leaded glass installing. The material used was upvc with a woodgrain finish. The leaded glass complements the upvc woodgrain...

Woodgrain UPVC Windows & Front Door

This customer opted for a natural looking woodgrain finish to the UPVC windows and UPVC casement front door give this house a traditional look and feel....

White UPVC Windows

This traditional rural property has enjoyed a new lease of life thanks to the addition of some white UPVC windows, bringing it straight into the 21st...

Bespoke UPVC Windows

By changing out the old bay windows for new bespoke vertical sliding UPVC windows, not only were we able to increase the heat retention of this...

Choose from double glazed, triple glazed, even secondary glazing…

Alongside options for the type of frame, style and colour, there is also an important decision to make about the type of glazing.  The technical specification of the glass will largely depend on whether you opt for Energy Rated Windows, but there’s also wide variety of aesthetic options such as leaded glass and astragal bars

close up of cream double glazing window located in tewkesbury

Double Glazing

Double glazing remains the most suitable specification of glazing for the majority of residential properties. Double glazing is more thermally efficient compared to single glazing  due to the insulating cavity that is created by the two panes of glass, the intelligent properties of the glass itself and other materials and components that make up the ‘sealed unit’. Our double glazed windows are available in a range of colours and finishes meaning there is something to suit virtually every home in Gloucestershire and Wiltshire.

aluminium triple glazing located in tewkesbury

Triple Glazing

As the name suggests triple glazing contains three panes of glass providing extra strength and an additional barrier helping to improve the security and thermal efficiency of your home. At Joedan Home Improvements we offer a huge range of UPVC & Aluminium Triple Glazed Window styles including Georgian Windows, Triple Glazing Windows use the very latest technology from the glazing industry to provide home owners with a level of energy efficiency and security never felt before. UPVC or Aluminium Triple Glazing has the same good looks as double glazing and comes in a variety of styles meaning there is a style to suit virtually every home.

secondary glazing

Secondary Glazing

As a company surrounded by many beautiful and historic villages, we understand that in some cases replacement UPVC and aluminium windows may not be the most sympathetic way to improve a homes energy efficiency. With secondary glazing you may be able to significantly decrease heat loss and drafts whilst still retaining the original character of the property. Another significant and immediate benefit of this type of glazing is an acoustic one – helping to reduce the amount of external noise travelling into the property. With a variety of styles available there should be an option for all types of window, the subtle designs will fit in behind your existing windows and a variety of colour options will help to blend this in with your décor,

UPVC, Aluminium or Heritage – the choice is yours…


upvc cream windows


UPVC windows from Joedan are simple, effective and one of the most popular double glazing styles throughout Gloucestershire & Wiltshire. They are suited to most property types and their ease of use appeals to many homeowners. What’s more, UPVC windows are virtually maintenance free, and block out exterior noise – not to mention the fact that they will keep your home warmer and make it more secure. Our double glazed UPVC windows are available with an ‘A++’ rating (the best!) for energy efficiency. ‘A++’ rated casement windows will reduce your need for energy-hungry central heating and you’ll see your bills decrease in turn.

top hung casement window near Worcester


At Joedan, we have been making aluminium windows since the company began. Our products today are the result of continual development to improve their aesthetics, strength, security, thermal efficiency and longevity.  The advantage of the latest technologically advanced aluminium framed windows is strength, durability, elegance and high thermal efficiency. Aluminium window frames allow light to flood into your property from even the smallest window, whilst offering the peace of mind of enhanced high security, as locking is built in as standard.

close up monkey tail handles near Worcester


Mechanically jointed timber-effect Heritage windows feature a flush fitting sash which replicates, to almost exact detail, the appearance of 19th century windows and when used in the construction of an orangery the result is nothing short of stunning. The design of the window frame and sash is complemented by traditional hardware such as butt hinges, peg stays and monkey tail handles.

Lots of colour options for your windows…

Although white has been the accepted colour choice for conservatories for a generation, Wessex has many more options than that in both the UPVC and Aluminium ranges.

The aluminium range now comes in 21 stylish colours, whilst with UPVc, woodgrain finishes are becoming more and more popular and come in 9 different colour options.

Gloucestershire’s finest windows and most welcoming service

If you’re looking for replacement windows in quality UPVC or Aluminium – Joedan Home Improvements carefully design all our replacement windows specifically to your requirements. We manufacture all our windows to the highest possible standards ensuring our range of aluminium windows, sash windows and double glazed UPVC windows will be sure to transform your home – whether you are looking for windows with traditional good looks or a more contemporary or unusual appearance.

aluminium energy efficient windows located in tewkesbury

Energy Efficiency

Here at Joedan, we are keen to do our bit to protect the environment for future generations and we know that many of our customers are also keen to do their bit and want the most energy efficient windows as possible. Our energy efficient windows prevent heat generated within the home from escaping and capture the sun’s FREE solar energy. Not only helping to protect the planet but also saving you money on you gas and electricity bills Developments in double glazing industry have led to the introduction of a scheme which rates the energy efficiency of UPVC Windows in the same way as white goods and electrical products.

upvc casement windows near birmingham


When considering the functionality of your new windows, security is obviously an important factor. We understand this consideration which is why we have invested heavily in developing the latest technology and manufacturing market leading products. This means that customers of Joedan Home Improvements can purchase their windows with confidence that the investment made will keep unwanted visitors out and their family safe.

Noise Reduction

When adding a new windows to a property, consideration has to be made for how well it keeps noise form the outside world out. For countryside properties, this may be less of an issue, however in built up areas, the sounds of busy life want to be kept out, and we have developed top quality products to achieve this.  Whatever your needs and preferences, we have the right product for you and your property.

Our Seamless Service…

Having new windows installed may seem like a daunting task, but not when you can count on the proven track record of Joedan, based on over 25 years of experience throughout Gloucestershire & Wiltshire, including the Cotswolds, Gloucester, Cheltenham & Swindon. We design and install orangeries to the very highest of standards – ensuring you get the very best in product, service and customer support every time.

aluminium windows and doors showroom


Think about the conservatory design you would like for your home, then discuss your ideas with us. Bring some rough measurements or maybe a photograph of your home and garden to our Cotswold Showroom. We will then draw up the plans on our computer, showing you how it will look from every angle – as part of our free design and quotation service.

upvc cream energy efficient window


One of our specialist surveyors will visit your home to take measurements and confirm the position  and size of your windows to your conservatory. If you need planning permission, we will sort it out with the local authority in Gloucestershire & Wiltshire, including the Cotswolds, Gloucester, Cheltenham & Swindon.

woodgrain front door located in tewkesbury


Unlike other window companies, Joedan Home Improvements will take care of everything so that you don’t need any concern. We will precisely schedule each step so you know exactly what is happening and when. We will always install your windows with the utmost respect and cleanliness.

10 Year Guarantee

With the impeccable quality of all of our products provided by our main supplier and manufacturer Conservatory Outlet, we have the confidence that allows us to offer all of our customers a 10 year guarantee.

Insurance Backed Guarantee

  • Joedan Home Improvements offers a 10 year guarantee which covers you for any remedial works that may be required after the installation of your windows, doors or conservatory is complete.
  • Joedan Home Improvements also offer a separate insurance backed guarantee.

Separate insurance guarantees are regulated by the Financial Services Authority (FSA) who are the independent watchdog who regulate financial services.

Free Tailor Made Designs

For further information on the fabulous range of home improvement products available, simply request your free brochure online today!

Book a Design Visit

Our Windows Range

Flush Casement Windows

The flush fitting casement window is the ideal solution for homes with a traditional look, combining classic appeal with modern materials.

Heritage Windows

Our Heritage range features all the advantages of modern materials such as UPVC, with the classic finish of traditional windows.

Woodgrain Windows

Our woodgrain windows will provide you with a touch of traditional style with all the added benefits of modern window materials.

Aluminium Windows

Aluminium windows are incredibly stylish and hard wearing, making them an ideal choice if you wish to modernise your property.

Coloured Windows

Looking for something a bit different to make your home stand out? Our coloured windows are the answer you’re looking for.

Triple Glazing

To maximise the energy efficiency and thermal properties of your home without sacrificing style, triple glazed windows are the answer.

Bay Windows

A bay window is an attractive and traditional asset to the home and with this in mind our range of options have been carefully designed to suit.

Georgian Windows

Georgian windows are a beautiful way to upgrade the façade of your home, giving an authentic appeal to your property.

Thermal Windows

Thermal windows are an easy way to make your home much more efficient all whilst updating the windows in your home.

Double Glazing

Double glazing is a must have upgrade for any home, helping to increase the energy efficiency of your home and keeping you warm.

Casement Windows

Traditional casement windows are a simple way to update your home, with their clean lines resulting in a modern finish to your home.

Replacement Windows

If you’re seeking replacement windows for your property then we’re bound to find the perfect solution to match your property.

Windows and Doors

Our selection of windows & doors are designed to fit perfectly with your home, no matter the style, colours or size you need.

Energy Efficient Windows

If you’re thinking of updating your windows then consider energy efficient windows which help to keep your home well insulated all year.

UPVC Windows

UPVC is low-maintenance and hard wearing, making it the ideal material to use for windows which will last for years to come.

Sash Windows

Our range of sash windows bring you this traditional window style with all the modern benefits of our high quality, durable materials.

Tilt & Turn Windows

If you would like to leave your windows ajar but are concerned about safety then Tilt & Turn windows are the perfect solution for you.